Uber's feature to split the cost of rides, UberPool, will arrive in Paris tomorrow, bringing it_to Europe for the first time. The service launched in San Francisco three_months ago and Uber has said it will bring the option_to London by the end of the year. UberPool promises to reduce_the price of your trip by as much as 50% in exchange for allowing the driver to swing by and pick up other passengers on the way. Uber claims_it will slice the cost of journeys_from the center of Paris to Charles de Gaulle Airport down to_as little as $22 (18).